Toxicological trivia from March 22, 2010: Seven Chinese girls suffered permanent lung damage, and two of them died later, after working for months without adequate protection in a paint factory employing nanoparticles, according a report from chinese investigators. Science of the extremely small particles is a major industry. A nanometer is a billionth of a meter, while the nanoparticles are between 1 and 100 nanómeters.Nanotechnology  is used in products such as sports, medicines, tires and electronics and has a projected annual market for 2015 of:
a) One million dollars;
b) A billion dollars;
c) 10 billion dollars.

Correct Answer b. Read more in Spanish news: severe lung damage with nanoparticles. Read alsoin DW: Nanotechnology Possesses Dazzling, Dangerous Potential